$ git clone -n https://src.fedoraproject.org/rpms/R-showtextdb.git /var/lib/mock/f40-build-2270442-54816/root/chroot_tmpdir/scmroot/R-showtextdb
Cloning into '/var/lib/mock/f40-build-2270442-54816/root/chroot_tmpdir/scmroot/R-showtextdb'...
$ git fetch origin c5287704fa82b408cd4f8f750e70f729610bbd6d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-showtextdb
 * [new ref]         c5287704fa82b408cd4f8f750e70f729610bbd6d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c528770 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild