$ git clone -n https://src.fedoraproject.org/rpms/mepack.git /var/lib/mock/f38-build-718647-96745/root/chroot_tmpdir/scmroot/mepack
Cloning into '/var/lib/mock/f38-build-718647-96745/root/chroot_tmpdir/scmroot/mepack'...
$ git fetch origin 56352e4c33cda5a90972b9b0abf2aa8a6fc219db:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mepack
 * [new ref]         56352e4c33cda5a90972b9b0abf2aa8a6fc219db -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 56352e4 Update to 1.0.4