$ git clone -n https://src.fedoraproject.org/rpms/R-gss.git /var/lib/mock/f40-build-737730-107338/root/chroot_tmpdir/scmroot/R-gss
Cloning into '/var/lib/mock/f40-build-737730-107338/root/chroot_tmpdir/scmroot/R-gss'...
$ git fetch origin 1265e9db31a8322bde4df070ae84d879154c5d0f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-gss
 * [new ref]         1265e9db31a8322bde4df070ae84d879154c5d0f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1265e9d Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild