$ git clone -n https://src.fedoraproject.org/rpms/R-fastmatch.git /var/lib/mock/f41-build-820896-152378/root/chroot_tmpdir/scmroot/R-fastmatch
Cloning into '/var/lib/mock/f41-build-820896-152378/root/chroot_tmpdir/scmroot/R-fastmatch'...
$ git fetch origin bd8db13e813761821f16dee0936fba3a8541d718:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-fastmatch
 * [new ref]         bd8db13e813761821f16dee0936fba3a8541d718 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bd8db13 Rebuilt for https://fedoraproject.org/wiki/Fedora_41_Mass_Rebuild