$ git clone -n https://src.fedoraproject.org/rpms/sar2.git /var/lib/mock/f40-build-804802-144615/root/chroot_tmpdir/scmroot/sar2
Cloning into '/var/lib/mock/f40-build-804802-144615/root/chroot_tmpdir/scmroot/sar2'...
$ git fetch origin ef69adc8abe3c6b0f76be14514ae8c99bb830a8c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/sar2
 * [new ref]         ef69adc8abe3c6b0f76be14514ae8c99bb830a8c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ef69adc Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild