$ git clone -n https://src.fedoraproject.org/rpms/python-blinker.git /var/lib/mock/f39-build-1529219-36192/root/chroot_tmpdir/scmroot/python-blinker
Cloning into '/var/lib/mock/f39-build-1529219-36192/root/chroot_tmpdir/scmroot/python-blinker'...
$ git fetch origin 902748b0a8e29606683f27d3f9fc74b9339ed993:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-blinker
 * [new ref]         902748b0a8e29606683f27d3f9fc74b9339ed993 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 902748b Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild