$ git clone -n https://src.fedoraproject.org/rpms/devhelp.git /var/lib/mock/f45-build-7443-364/root/chroot_tmpdir/scmroot/devhelp
Cloning into '/var/lib/mock/f45-build-7443-364/root/chroot_tmpdir/scmroot/devhelp'...
$ git fetch origin 8d773d3388d60fe2842a7e8d271c408209d7680b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/devhelp
 * [new ref]         8d773d3388d60fe2842a7e8d271c408209d7680b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8d773d3 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild