$ git clone -n https://src.fedoraproject.org/rpms/libXres.git /var/lib/mock/f40-build-738286-107786/root/chroot_tmpdir/scmroot/libXres
Cloning into '/var/lib/mock/f40-build-738286-107786/root/chroot_tmpdir/scmroot/libXres'...
$ git fetch origin 96b52168eead2df269c3e6f52c297b2a9c2e69cb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libXres
 * [new ref]         96b52168eead2df269c3e6f52c297b2a9c2e69cb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 96b5216 libXres 1.2.2