$ git clone -n https://src.fedoraproject.org/rpms/dlm.git /var/lib/mock/f45-build-7560-367/root/chroot_tmpdir/scmroot/dlm
Cloning into '/var/lib/mock/f45-build-7560-367/root/chroot_tmpdir/scmroot/dlm'...
$ git fetch origin 6d46225b0324a1bb18b237b655f112b961ef6873:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dlm
 * [new ref]         6d46225b0324a1bb18b237b655f112b961ef6873 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6d46225 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild