$ git clone -n https://src.fedoraproject.org/rpms/reproc.git /var/lib/mock/f40-build-793949-139322/root/chroot_tmpdir/scmroot/reproc
Cloning into '/var/lib/mock/f40-build-793949-139322/root/chroot_tmpdir/scmroot/reproc'...
$ git fetch origin 3b7470665a1ba30d98d4c3adf4591a3cc4a4aa25:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/reproc
 * [new ref]         3b7470665a1ba30d98d4c3adf4591a3cc4a4aa25 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3b74706 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild