$ git clone -n https://src.fedoraproject.org/rpms/libotr.git /var/lib/mock/f45-build-16733-490/root/chroot_tmpdir/scmroot/libotr
Cloning into '/var/lib/mock/f45-build-16733-490/root/chroot_tmpdir/scmroot/libotr'...
$ git fetch origin aae371f909abdf0e1a5b0fd4fa83a5c0cd8ff042:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libotr
 * [new ref]         aae371f909abdf0e1a5b0fd4fa83a5c0cd8ff042 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at aae371f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild