$ git clone -n https://src.fedoraproject.org/rpms/krfb.git /var/lib/mock/f42-build-3340334-44984/root/chroot_tmpdir/scmroot/krfb
Cloning into '/var/lib/mock/f42-build-3340334-44984/root/chroot_tmpdir/scmroot/krfb'...
$ git fetch origin 157b9cd5e310a246b69549caa174767683c78ec8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/krfb
 * [new ref]         157b9cd5e310a246b69549caa174767683c78ec8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 157b9cd 24.12.3