$ git clone -n https://src.fedoraproject.org/rpms/bustle.git /var/lib/mock/f42-build-side-1-3587662-46934/root/chroot_tmpdir/scmroot/bustle
Cloning into '/var/lib/mock/f42-build-side-1-3587662-46934/root/chroot_tmpdir/scmroot/bustle'...
$ git fetch origin 1ee2daa4b250f60a3ff4f8a25c68d6195579ea4b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/bustle
 * [new ref]         1ee2daa4b250f60a3ff4f8a25c68d6195579ea4b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1ee2daa Update to version 0.12.0 and update spec for Rust rewrite