$ git clone -n https://src.fedoraproject.org/rpms/ruff.git /var/lib/mock/f40-build-799386-142276/root/chroot_tmpdir/scmroot/ruff
Cloning into '/var/lib/mock/f40-build-799386-142276/root/chroot_tmpdir/scmroot/ruff'...
$ git fetch origin 642748c1ebf2c53f972a11cd8348399ee6cbd9d7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ruff
 * [new ref]         642748c1ebf2c53f972a11cd8348399ee6cbd9d7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 642748c Update to version 0.2.2; Fixes RHBZ#2261934