$ git clone -n https://src.fedoraproject.org/rpms/R-timechange.git /var/lib/mock/f40-build-2247865-53925/root/chroot_tmpdir/scmroot/R-timechange
Cloning into '/var/lib/mock/f40-build-2247865-53925/root/chroot_tmpdir/scmroot/R-timechange'...
$ git fetch origin f96274bd0c0cc891be3e9d827d2df674780ae579:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-timechange
 * [new ref]         f96274bd0c0cc891be3e9d827d2df674780ae579 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f96274b Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild