$ git clone -n https://src.fedoraproject.org/rpms/rust-base16ct.git /var/lib/mock/f38-build-side-42-init-devel-1396192-31050/root/chroot_tmpdir/scmroot/rust-base16ct
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1396192-31050/root/chroot_tmpdir/scmroot/rust-base16ct'...
$ git fetch origin 243eae1f487f65a32c8546ab83e06ff8b3546fd5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-base16ct
 * [new ref]         243eae1f487f65a32c8546ab83e06ff8b3546fd5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 243eae1 Initial import (#2211087)