$ git clone -n https://src.fedoraproject.org/rpms/python-portalocker.git /var/lib/mock/f39-build-1620909-38704/root/chroot_tmpdir/scmroot/python-portalocker
Cloning into '/var/lib/mock/f39-build-1620909-38704/root/chroot_tmpdir/scmroot/python-portalocker'...
$ git fetch origin 95a24eb5755d479b0ffe8345fa4c68977f895678:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-portalocker
 * [new ref]         95a24eb5755d479b0ffe8345fa4c68977f895678 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 95a24eb Add packit config