$ git clone -n https://src.fedoraproject.org/rpms/chibi-scheme.git /var/lib/mock/f40-build-1992564-43610/root/chroot_tmpdir/scmroot/chibi-scheme
Cloning into '/var/lib/mock/f40-build-1992564-43610/root/chroot_tmpdir/scmroot/chibi-scheme'...
$ git fetch origin 0f0ca396436ed8eb6d8d80cf21c01ff92ba84f19:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/chibi-scheme
 * [new ref]         0f0ca396436ed8eb6d8d80cf21c01ff92ba84f19 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0f0ca39 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild