diff --git a/gitian-building.md b/gitian-building.md
index 38afea9..cfa5222 100644
--- a/gitian-building.md
+++ b/gitian-building.md
@@ -1,6 +1,6 @@
 # Gitian Building
 
-Last updated: December 12, 2020
+Last updated: December 25, 2020
 
 *This is based on fanquake's
 [gitian-building](https://github.com/fanquake/core-review/blob/master/gitian-building/README.md),
@@ -167,10 +167,6 @@ export VERSION=0.21.0rc3
 export SIGNER=your_username
 export USE_DOCKER=1
 
-pushd gitian.sigs
-git checkout -b $SIGNER-$VERSION
-popd
-
 pushd bitcoin
 git checkout v$VERSION
 popd
@@ -178,6 +174,14 @@ popd
 
 ## Build Unsigned Sigs
 
+Since we'll be creating a PR to the `gitian.sigs` repo, make a new branch off master:
+
+```bash
+pushd gitian.sigs
+git checkout -b $SIGNER-$VERSION-unsigned master
+popd
+```
+
 All of the instructions in this section are to be run from within the
 `gitian-builder` directory:
 
@@ -277,6 +281,16 @@ You would normally run both of these (macOS and Windows) and submit the results
 in one PR. These build far faster than the builds for the unsigned signatures --
 within a minute or so, or even a few seconds.
 
+Since we'll be creating a PR to the `gitian.sigs` repo, make a new branch off master:
+
+```bash
+pushd gitian.sigs
+git checkout -b $SIGNER-$VERSION-signed master
+popd
+```
+
+Then navigate to `gitian-builder`
+
 ```
 pushd gitian-builder
 ```