$ git clone -n https://src.fedoraproject.org/rpms/golang-github-zeebo-admission.git /var/lib/mock/f41-build-1036527-18736/root/chroot_tmpdir/scmroot/golang-github-zeebo-admission
Cloning into '/var/lib/mock/f41-build-1036527-18736/root/chroot_tmpdir/scmroot/golang-github-zeebo-admission'...
$ git fetch origin 0493e8fadfc2226b787672a303da1943f4c93ef0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-zeebo-admission
 * [new ref]         0493e8fadfc2226b787672a303da1943f4c93ef0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0493e8f Fix FTBFS