$ git clone -n https://src.fedoraproject.org/rpms/R-import.git /var/lib/mock/f40-build-2304728-57039/root/chroot_tmpdir/scmroot/R-import
Cloning into '/var/lib/mock/f40-build-2304728-57039/root/chroot_tmpdir/scmroot/R-import'...
$ git fetch origin ab8654260aa0e8bdfc6b5d851b7b00cb1f598b32:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-import
 * [new ref]         ab8654260aa0e8bdfc6b5d851b7b00cb1f598b32 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ab86542 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild