$ git clone -n https://src.fedoraproject.org/rpms/rubygem-haml.git /var/lib/mock/f40-build-2607723-63673/root/chroot_tmpdir/scmroot/rubygem-haml
Cloning into '/var/lib/mock/f40-build-2607723-63673/root/chroot_tmpdir/scmroot/rubygem-haml'...
$ git fetch origin 67d220c6c82be591ba95e74dde5981bfd6d8242d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-haml
 * [new ref]         67d220c6c82be591ba95e74dde5981bfd6d8242d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 67d220c Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild