$ git clone -n https://src.fedoraproject.org/rpms/speedcrunch.git /var/lib/mock/f39-build-1519355-35815/root/chroot_tmpdir/scmroot/speedcrunch
Cloning into '/var/lib/mock/f39-build-1519355-35815/root/chroot_tmpdir/scmroot/speedcrunch'...
$ git fetch origin 20138ec5509e539df64a9ab3df9cdd3f16b83086:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/speedcrunch
 * [new ref]         20138ec5509e539df64a9ab3df9cdd3f16b83086 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 20138ec Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild