$ git clone -n https://src.fedoraproject.org/rpms/rust-kurbu5-kdb-rs.git /var/lib/mock/f45-build-42798-796/root/chroot_tmpdir/scmroot/rust-kurbu5-kdb-rs
Cloning into '/var/lib/mock/f45-build-42798-796/root/chroot_tmpdir/scmroot/rust-kurbu5-kdb-rs'...
$ git fetch origin 7f8544376574274f7e43015fbd82e4899324c6db:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-kurbu5-kdb-rs
 * [new ref]         7f8544376574274f7e43015fbd82e4899324c6db -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7f85443 Remove kurbu5-kdb-rs-fix-aarch64.patch