$ git clone -n https://src.fedoraproject.org/rpms/cmark.git /var/lib/mock/f45-build-4207-331/root/chroot_tmpdir/scmroot/cmark
Cloning into '/var/lib/mock/f45-build-4207-331/root/chroot_tmpdir/scmroot/cmark'...
$ git fetch origin 3222c8155662368af83f2c5ca7cc365960b1b1e4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cmark
 * [new ref]         3222c8155662368af83f2c5ca7cc365960b1b1e4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3222c81 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild