$ git clone -n https://src.fedoraproject.org/rpms/golang-x-time.git /var/lib/mock/f45-build-12831-443/root/chroot_tmpdir/scmroot/golang-x-time
Cloning into '/var/lib/mock/f45-build-12831-443/root/chroot_tmpdir/scmroot/golang-x-time'...
$ git fetch origin 0f794bad31b24e9b01806f143eacd487e21f8985:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-x-time
 * [new ref]         0f794bad31b24e9b01806f143eacd487e21f8985 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0f794ba Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild