$ git clone -n https://src.fedoraproject.org/rpms/libXdamage.git /var/lib/mock/f45-build-15774-479/root/chroot_tmpdir/scmroot/libXdamage
Cloning into '/var/lib/mock/f45-build-15774-479/root/chroot_tmpdir/scmroot/libXdamage'...
$ git fetch origin 6f078f67c11c0e9b4f4f683968758ae0004bdfa2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libXdamage
 * [new ref]         6f078f67c11c0e9b4f4f683968758ae0004bdfa2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6f078f6 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild