$ git clone -n https://src.fedoraproject.org/rpms/golang-github-rickb777-date.git /var/lib/mock/f40-build-2241026-53660/root/chroot_tmpdir/scmroot/golang-github-rickb777-date
Cloning into '/var/lib/mock/f40-build-2241026-53660/root/chroot_tmpdir/scmroot/golang-github-rickb777-date'...
$ git fetch origin 74b622b0415cdf609e2f5417b02d07ae280dc73a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-rickb777-date
 * [new ref]         74b622b0415cdf609e2f5417b02d07ae280dc73a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 74b622b New release 1.20.5 (RHBZ#2239983)