$ git clone -n https://src.fedoraproject.org/rpms/rust-newtype-uuid.git /var/lib/mock/f45-build-43351-802/root/chroot_tmpdir/scmroot/rust-newtype-uuid
Cloning into '/var/lib/mock/f45-build-43351-802/root/chroot_tmpdir/scmroot/rust-newtype-uuid'...
$ git fetch origin 108ad1fdd8b5d690bfd275b6483792da3f4c9030:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-newtype-uuid
 * [new ref]         108ad1fdd8b5d690bfd275b6483792da3f4c9030 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 108ad1f Update to version 1.4.0