$ git clone -n https://src.fedoraproject.org/rpms/libdsk.git /var/lib/mock/f45-build-16072-481/root/chroot_tmpdir/scmroot/libdsk
Cloning into '/var/lib/mock/f45-build-16072-481/root/chroot_tmpdir/scmroot/libdsk'...
$ git fetch origin a929266b0c1462e05825297bec1a2fc4152048d1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libdsk
 * [new ref]         a929266b0c1462e05825297bec1a2fc4152048d1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a929266 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild