$ git clone -n https://src.fedoraproject.org/rpms/libkscreen.git /var/lib/mock/f40-build-2600232-63098/root/chroot_tmpdir/scmroot/libkscreen
Cloning into '/var/lib/mock/f40-build-2600232-63098/root/chroot_tmpdir/scmroot/libkscreen'...
$ git fetch origin 051592804f495d8a9c06d09f21475aaee7b166b0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libkscreen
 * [new ref]         051592804f495d8a9c06d09f21475aaee7b166b0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0515928 6.0.2