$ git clone -n https://src.fedoraproject.org/rpms/sdl12-compat.git /var/lib/mock/f45-build-35732-698/root/chroot_tmpdir/scmroot/sdl12-compat
Cloning into '/var/lib/mock/f45-build-35732-698/root/chroot_tmpdir/scmroot/sdl12-compat'...
$ git fetch origin be00139df4b6eaea8024797251e584b0f0203e10:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/sdl12-compat
 * [new ref]         be00139df4b6eaea8024797251e584b0f0203e10 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at be00139 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild