$ git clone -n https://src.fedoraproject.org/rpms/R-XVector.git /var/lib/mock/f41-build-821803-152622/root/chroot_tmpdir/scmroot/R-XVector
Cloning into '/var/lib/mock/f41-build-821803-152622/root/chroot_tmpdir/scmroot/R-XVector'...
$ git fetch origin dc0200f1dc78fae38aa9d133886ab53accf766a7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-XVector
 * [new ref]         dc0200f1dc78fae38aa9d133886ab53accf766a7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dc0200f Rebuilt for https://fedoraproject.org/wiki/Fedora_41_Mass_Rebuild