$ git clone -n https://src.fedoraproject.org/rpms/libksysguard.git /var/lib/mock/f41-build-side-1-2820693-33177/root/chroot_tmpdir/scmroot/libksysguard
Cloning into '/var/lib/mock/f41-build-side-1-2820693-33177/root/chroot_tmpdir/scmroot/libksysguard'...
$ git fetch origin 2f428633dfb7fa208706cceb92c0cf1d9235200a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libksysguard
 * [new ref]         2f428633dfb7fa208706cceb92c0cf1d9235200a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2f42863 6.1.90