On super: ./configure && make -s clean marks git tree as dirty

[frank-dittrich]

A newly cloned repo:

[frank@super src]$ git describe --tags --dirty=+
1.8.0.6-jumbo-1-240-ga4c2f3e
[frank@super src]$ make -s distclean
[frank@super src]$ git describe --tags --dirty=+
1.8.0.6-jumbo-1-240-ga4c2f3e
[frank@super src]$ ./configure --disable-cuda --disable-openmp > /dev/null
[frank@super src]$ git describe --tags --dirty=+
1.8.0.6-jumbo-1-240-ga4c2f3e
[frank@super src]$ make -s clean
[frank@super src]$ git describe --tags --dirty=+
1.8.0.6-jumbo-1-240-ga4c2f3e+
[frank@super src]$ make -s distclean
[frank@super src]$ git describe --tags --dirty=+
1.8.0.6-jumbo-1-240-ga4c2f3e+
[frank@super src]$ git diff
[frank@super src]$ git status
# On branch bleeding-jumbo
nothing to commit (working directory clean)
[frank@super src]$ git checkout HEAD
[frank@super src]$ git describe --tags --dirty=+
1.8.0.6-jumbo-1-240-ga4c2f3e
[frank@super src]$ make -s clean
[frank@super src]$ git describe --tags --dirty=+
1.8.0.6-jumbo-1-240-ga4c2f3e
[frank@super src]$ ./configure --disable-cuda --disable-openmp > /dev/null
[frank@super src]$ git describe --tags --dirty=+
1.8.0.6-jumbo-1-240-ga4c2f3e
[frank@super src]$ make -s clean
[frank@super src]$ git describe --tags --dirty=+
1.8.0.6-jumbo-1-240-ga4c2f3e+
[frank@super src]$ git checkout HEAD
[frank@super src]$ git describe --tags --dirty=+
1.8.0.6-jumbo-1-240-ga4c2f3e
[frank@super src]$ ./configure --disable-cuda --disable-openmp --disable-opencl > /dev/null
[frank@super src]$ git describe --tags --dirty=+
1.8.0.6-jumbo-1-240-ga4c2f3e
[frank@super src]$ make -s clean
[frank@super src]$ git describe --tags --dirty=+
1.8.0.6-jumbo-1-240-ga4c2f3e+

Any idea what causes this?

[frank@super src]$ cd ../..
[frank@super git]$ cp -i -a JohnTheRipper/ JohnTheRipper2/
[frank@super git]$ diff -r JohnTheRipper JohnTheRipper2
[frank@super git]$ cd JohnTheRipper/src/
[frank@super src]$ git describe --tags --dirty=+
1.8.0.6-jumbo-1-240-ga4c2f3e+
[frank@super src]$ git checkout HEAD
[frank@super src]$ git describe --tags --dirty=+
1.8.0.6-jumbo-1-240-ga4c2f3e
[frank@super src]$ cd ..
[frank@super JohnTheRipper]$ cd ..
[frank@super git]$ diff -r JohnTheRipper JohnTheRipper2
Binary files JohnTheRipper/.git/index and JohnTheRipper2/.git/index differ
[frank@super git]$ git --version
git version 1.7.1

Currently, I assume a bug in super's git version. But I am not sure.
On my local system I have

(bleeding-jumbo)run $ git --version
git version 2.4.3

[magnumripper]

It sure looks like a bug in git.

[frank-dittrich]

I think we can close this one.
I just wanted to have it documented for others who want to search whether the issue has already been reported. That's why I still created the issue even when I finally found the likely culprit.