$ git clone -n https://src.fedoraproject.org/rpms/guile-reader.git /var/lib/mock/f41-build-2629655-25588/root/chroot_tmpdir/scmroot/guile-reader
Cloning into '/var/lib/mock/f41-build-2629655-25588/root/chroot_tmpdir/scmroot/guile-reader'...
$ git fetch origin 27b6bd26faf22b773a9961a506d9cabff95461ed:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/guile-reader
 * [new ref]         27b6bd26faf22b773a9961a506d9cabff95461ed -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 27b6bd2 Rebuilt for https://fedoraproject.org/wiki/Fedora_41_Mass_Rebuild