$ git clone -n https://src.fedoraproject.org/rpms/gh.git /var/lib/mock/f39-build-1969242-43312/root/chroot_tmpdir/scmroot/gh
Cloning into '/var/lib/mock/f39-build-1969242-43312/root/chroot_tmpdir/scmroot/gh'...
$ git fetch origin 642c9b6d05a44c3b8a155e8b228b9c614dd69d17:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gh
 * [new ref]         642c9b6d05a44c3b8a155e8b228b9c614dd69d17 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 642c9b6 Update to 2.39.2 - Closes rhbz#2251883