$ git clone -n https://src.fedoraproject.org/rpms/glimmer.git /var/lib/mock/f45-build-11173-428/root/chroot_tmpdir/scmroot/glimmer
Cloning into '/var/lib/mock/f45-build-11173-428/root/chroot_tmpdir/scmroot/glimmer'...
$ git fetch origin 651c5bf4514d0f50b37fa88ad500e517fbb8c8cb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/glimmer
 * [new ref]         651c5bf4514d0f50b37fa88ad500e517fbb8c8cb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 651c5bf Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild