$ git clone -n https://src.fedoraproject.org/rpms/p11-kit.git /var/lib/mock/f39-build-1550534-36942/root/chroot_tmpdir/scmroot/p11-kit
Cloning into '/var/lib/mock/f39-build-1550534-36942/root/chroot_tmpdir/scmroot/p11-kit'...
$ git fetch origin c8034a7af58775672da90eb0baf8b7e5c5efd35d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/p11-kit
 * [new ref]         c8034a7af58775672da90eb0baf8b7e5c5efd35d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c8034a7 [packit] 0.25.2 upstream release