$ git clone -n https://src.fedoraproject.org/rpms/copr-backend.git /var/lib/mock/f41-build-1046871-19101/root/chroot_tmpdir/scmroot/copr-backend
Cloning into '/var/lib/mock/f41-build-1046871-19101/root/chroot_tmpdir/scmroot/copr-backend'...
$ git fetch origin 86f918280479321e0f0b9b9795c6ef0a6d4b983c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/copr-backend
 * [new ref]         86f918280479321e0f0b9b9795c6ef0a6d4b983c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 86f9182 Rebuilt for Python 3.13