$ git clone -n https://src.fedoraproject.org/rpms/golang-github-posener-complete.git /var/lib/mock/f45-build-12362-441/root/chroot_tmpdir/scmroot/golang-github-posener-complete
Cloning into '/var/lib/mock/f45-build-12362-441/root/chroot_tmpdir/scmroot/golang-github-posener-complete'...
$ git fetch origin 3c2e7fda0bb6477220e8cc4ff4dc48155d41d670:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-posener-complete
 * [new ref]         3c2e7fda0bb6477220e8cc4ff4dc48155d41d670 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3c2e7fd Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild