$ git clone -n https://src.fedoraproject.org/rpms/grepcidr.git /var/lib/mock/f39-build-1465948-33631/root/chroot_tmpdir/scmroot/grepcidr
Cloning into '/var/lib/mock/f39-build-1465948-33631/root/chroot_tmpdir/scmroot/grepcidr'...
$ git fetch origin 0ea72fe08bfe6cf8737580b97b957c61a3300342:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/grepcidr
 * [new ref]         0ea72fe08bfe6cf8737580b97b957c61a3300342 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0ea72fe Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild