$ git clone -n https://src.fedoraproject.org/rpms/R-biomaRt.git /var/lib/mock/f39-build-1544677-36659/root/chroot_tmpdir/scmroot/R-biomaRt
Cloning into '/var/lib/mock/f39-build-1544677-36659/root/chroot_tmpdir/scmroot/R-biomaRt'...
$ git fetch origin 2dfd9a1b32480285eefc0c736640bf69c95face4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-biomaRt
 * [new ref]         2dfd9a1b32480285eefc0c736640bf69c95face4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2dfd9a1 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild