$ git clone -n https://src.fedoraproject.org/rpms/arch-test.git /var/lib/mock/f40-build-2273990-55005/root/chroot_tmpdir/scmroot/arch-test
Cloning into '/var/lib/mock/f40-build-2273990-55005/root/chroot_tmpdir/scmroot/arch-test'...
$ git fetch origin 475b084739c5c4dc62212958b48cbbe256b59ebe:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/arch-test
 * [new ref]         475b084739c5c4dc62212958b48cbbe256b59ebe -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 475b084 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild