$ git clone -n https://src.fedoraproject.org/rpms/maloc.git /var/lib/mock/f45-build-17979-506/root/chroot_tmpdir/scmroot/maloc
Cloning into '/var/lib/mock/f45-build-17979-506/root/chroot_tmpdir/scmroot/maloc'...
$ git fetch origin 864ad5f3726ccef8d795dee1db08ba01c672e596:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/maloc
 * [new ref]         864ad5f3726ccef8d795dee1db08ba01c672e596 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 864ad5f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild