$ git clone -n https://src.fedoraproject.org/rpms/copr-frontend.git /var/lib/mock/f40-build-2478858-61610/root/chroot_tmpdir/scmroot/copr-frontend
Cloning into '/var/lib/mock/f40-build-2478858-61610/root/chroot_tmpdir/scmroot/copr-frontend'...
$ git fetch origin be545298ebea8cd868317fe6f77928c1bbb327c1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/copr-frontend
 * [new ref]         be545298ebea8cd868317fe6f77928c1bbb327c1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at be54529 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild