$ git clone -n https://src.fedoraproject.org/rpms/golang-github-stack.git /var/lib/mock/f45-build-12522-442/root/chroot_tmpdir/scmroot/golang-github-stack
Cloning into '/var/lib/mock/f45-build-12522-442/root/chroot_tmpdir/scmroot/golang-github-stack'...
$ git fetch origin 5c01ad92b0da20934e4691fa5e4f870ba2c36831:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-stack
 * [new ref]         5c01ad92b0da20934e4691fa5e4f870ba2c36831 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5c01ad9 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild