$ git clone -n https://src.fedoraproject.org/rpms/sblim-gather.git /var/lib/mock/f45-build-35658-698/root/chroot_tmpdir/scmroot/sblim-gather
Cloning into '/var/lib/mock/f45-build-35658-698/root/chroot_tmpdir/scmroot/sblim-gather'...
$ git fetch origin 0a9bc53206f6f84ce3aaae9e543a1229557a7654:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/sblim-gather
 * [new ref]         0a9bc53206f6f84ce3aaae9e543a1229557a7654 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0a9bc53 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild