$ git clone -n https://src.fedoraproject.org/rpms/lazarus.git /var/lib/mock/f38-build-side-42-init-devel-1379990-30706/root/chroot_tmpdir/scmroot/lazarus
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1379990-30706/root/chroot_tmpdir/scmroot/lazarus'...
$ git fetch origin 68b1c5436c69ef4a46143c0de614815af2efdd53:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/lazarus
 * [new ref]         68b1c5436c69ef4a46143c0de614815af2efdd53 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 68b1c54 Update to v2.2.6