Failed to get PR metadata in case of relocated git repository

[gaol]

Some github repositories are relocated to another organization, which will lead to the getting PR metadata failure:

[🎩 lgao@lgao vertx]$ git status
On branch pulls/3228
nothing to commit, working tree clean
[🎩 lgao@lgao vertx]$ git remote -v
origin	https://github.com/eclipse/vert.x (fetch)
origin	https://github.com/eclipse/vert.x (push)
[🎩 lgao@lgao vertx]$ bash -x /sources/jboss-set/auxilia/pr-merge origin 3228
+ sanity_check
+ isJqInstalled
+ local jq_url=https://stedolan.github.io/jq
+ which jq
+ '[' 0 '!=' 0 ']'
+ isNetrcPresent
+ local netrc_file=/home/lgao/.netrc
+ '[' '!' -e /home/lgao/.netrc -o '!' -r /home/lgao/.netrc ']'
+ set -eo pipefail
+ '[' 2 '!=' 2 ']'
++ git rev-parse --abbrev-ref HEAD
+ readonly BRANCH=pulls/3228
+ BRANCH=pulls/3228
+ readonly REMOTE=origin
+ REMOTE=origin
+ readonly PR_ID=3228
+ PR_ID=3228
+ '[' -z origin ']'
+ '[' -z 3228 ']'
+ echo 'Merging 3228 from origin onto pulls/3228'
Merging 3228 from origin onto pulls/3228
++ git remote -v
++ grep '^origin[ ]*'
++ grep fetch
++ cut -f2
++ cut '-d ' -f1
+ readonly FETCH_URL=https://github.com/eclipse/vert.x
+ FETCH_URL=https://github.com/eclipse/vert.x
+ '[' -z https://github.com/eclipse/vert.x ']'
++ echo https://github.com/eclipse/vert.x
++ sed 's/\//:/g'
+ readonly URL_PARSE=https:::github.com:eclipse:vert.x
+ URL_PARSE=https:::github.com:eclipse:vert.x
+ readonly REPO_PART=vert.x
+ REPO_PART=vert.x
++ echo vert.x
++ sed s/.git//
+ readonly REPO=vert.x
+ REPO=vert.x
++ echo https:::github.com:eclipse:vert.x
++ sed s/:vert.x//
+ readonly URL_LEFT=https:::github.com:eclipse
+ URL_LEFT=https:::github.com:eclipse
+ readonly OWNER=eclipse
+ OWNER=eclipse
+ '[' -z eclipse -o -z vert.x ']'
+ readonly PR_GITHUB_API_URL=https://api.github.com/repos/eclipse/vert.x/pulls/3228
+ PR_GITHUB_API_URL=https://api.github.com/repos/eclipse/vert.x/pulls/3228
+ set -e
+ echo -n 'Retrieving PR information from https://api.github.com/repos/eclipse/vert.x/pulls/3228...'
Retrieving PR information from https://api.github.com/repos/eclipse/vert.x/pulls/3228...++ curl -s -n https://api.github.com/repos/eclipse/vert.x/pulls/3228
+ readonly 'PULL={
  "message": "Moved Permanently",
  "url": "https://api.github.com/repositories/1911523/pulls/3228",
  "documentation_url": "https://developer.github.com/v3/#http-redirects"
}'
+ PULL='{
  "message": "Moved Permanently",
  "url": "https://api.github.com/repositories/1911523/pulls/3228",
  "documentation_url": "https://developer.github.com/v3/#http-redirects"
}'
++ grep 'Not Found'
++ echo '{' '"message":' '"Moved' 'Permanently",' '"url":' '"https://api.github.com/repositories/1911523/pulls/3228",' '"documentation_url":' '"https://developer.github.com/v3/#http-redirects"' '}'
+ '[' 0 -ne 0 -o '' '!=' '' ']'
+ echo Done.
Done.
+ set +e
++ echo '{' '"message":' '"Moved' 'Permanently",' '"url":' '"https://api.github.com/repositories/1911523/pulls/3228",' '"documentation_url":' '"https://developer.github.com/v3/#http-redirects"' '}'
++ jq -r .head.label
++ echo '{' '"message":' '"Moved' 'Permanently",' '"url":' '"https://api.github.com/repositories/1911523/pulls/3228",' '"documentation_url":' '"https://developer.github.com/v3/#http-redirects"' '}'
++ jq -r .title
+ readonly 'MSG=Merge pull request #3228 from null null'
+ MSG='Merge pull request #3228 from null null'
+ echo 'Git commit message will be: Merge pull request #3228 from null null'
Git commit message will be: Merge pull request #3228 from null null
+ echo -n Continue...
Continue...+ read _