$ git clone -n https://src.fedoraproject.org/rpms/credentials-fetcher.git /var/lib/mock/f40-build-2355416-60304/root/chroot_tmpdir/scmroot/credentials-fetcher
Cloning into '/var/lib/mock/f40-build-2355416-60304/root/chroot_tmpdir/scmroot/credentials-fetcher'...
$ git fetch origin 4e002df4e5332b08006d487aac8bde5259b7eca1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/credentials-fetcher
 * [new ref]         4e002df4e5332b08006d487aac8bde5259b7eca1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4e002df Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild