$ git clone -n https://src.fedoraproject.org/rpms/golang-github-posener-script.git /var/lib/mock/f45-build-12406-442/root/chroot_tmpdir/scmroot/golang-github-posener-script
Cloning into '/var/lib/mock/f45-build-12406-442/root/chroot_tmpdir/scmroot/golang-github-posener-script'...
$ git fetch origin 80a8d9d327ed90c137e0e15e1d096aa6bf4008ce:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-posener-script
 * [new ref]         80a8d9d327ed90c137e0e15e1d096aa6bf4008ce -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 80a8d9d Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild