$ git clone -n https://src.fedoraproject.org/rpms/rust-toml_datetime.git /var/lib/mock/f38-build-side-42-init-devel-584715-26106/root/chroot_tmpdir/scmroot/rust-toml_datetime
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-584715-26106/root/chroot_tmpdir/scmroot/rust-toml_datetime'...
$ git fetch origin b2217fa0c6f5ecc4988134da72d5d3e6d04c1c61:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-toml_datetime
 * [new ref]         b2217fa0c6f5ecc4988134da72d5d3e6d04c1c61 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b2217fa Initial import (#2183334)