$ git clone -n https://src.fedoraproject.org/rpms/rust-deranged.git /var/lib/mock/f38-build-side-42-init-devel-1406891-31263/root/chroot_tmpdir/scmroot/rust-deranged
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1406891-31263/root/chroot_tmpdir/scmroot/rust-deranged'...
$ git fetch origin 7055424f2cd026579d73c509f3a25e288df8624b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-deranged
 * [new ref]         7055424f2cd026579d73c509f3a25e288df8624b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7055424 Initial import (#2228097)