$ git clone -n https://src.fedoraproject.org/rpms/gdlmm.git /var/lib/mock/f45-build-9673-407/root/chroot_tmpdir/scmroot/gdlmm
Cloning into '/var/lib/mock/f45-build-9673-407/root/chroot_tmpdir/scmroot/gdlmm'...
$ git fetch origin 9da5a46c3890d92b14e52778b8c0dd35c83a554f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gdlmm
 * [new ref]         9da5a46c3890d92b14e52778b8c0dd35c83a554f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9da5a46 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild