$ git clone -n https://src.fedoraproject.org/rpms/rust-gimli.git /var/lib/mock/f45-build-41890-786/root/chroot_tmpdir/scmroot/rust-gimli
Cloning into '/var/lib/mock/f45-build-41890-786/root/chroot_tmpdir/scmroot/rust-gimli'...
$ git fetch origin 9b7508994f7836f41054f2fdb6caab554abf09bf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gimli
 * [new ref]         9b7508994f7836f41054f2fdb6caab554abf09bf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9b75089 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild