$ git clone -n https://src.fedoraproject.org/rpms/rust-group.git /var/lib/mock/f40-build-2681083-67952/root/chroot_tmpdir/scmroot/rust-group
Cloning into '/var/lib/mock/f40-build-2681083-67952/root/chroot_tmpdir/scmroot/rust-group'...
$ git fetch origin dc83191050f4925e3617397c377d448af7724938:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-group
 * [new ref]         dc83191050f4925e3617397c377d448af7724938 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dc83191 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild