$ git clone -n https://src.fedoraproject.org/rpms/cpptest.git /var/lib/mock/f40-build-2284046-55615/root/chroot_tmpdir/scmroot/cpptest
Cloning into '/var/lib/mock/f40-build-2284046-55615/root/chroot_tmpdir/scmroot/cpptest'...
$ git fetch origin f7c5a3f3622edc2f1eb1a92b446b3f1d57d38014:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cpptest
 * [new ref]         f7c5a3f3622edc2f1eb1a92b446b3f1d57d38014 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f7c5a3f Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild