$ git clone -n https://src.fedoraproject.org/rpms/R-showtextdb.git /var/lib/mock/f40-build-2033279-47786/root/chroot_tmpdir/scmroot/R-showtextdb
Cloning into '/var/lib/mock/f40-build-2033279-47786/root/chroot_tmpdir/scmroot/R-showtextdb'...
$ git fetch origin 2e207a2504fd84587441690519b91867ba973b8a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-showtextdb
 * [new ref]         2e207a2504fd84587441690519b91867ba973b8a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2e207a2 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild