$ git clone -n https://src.fedoraproject.org/rpms/R-measurements.git /var/lib/mock/f39-build-1470561-33904/root/chroot_tmpdir/scmroot/R-measurements
Cloning into '/var/lib/mock/f39-build-1470561-33904/root/chroot_tmpdir/scmroot/R-measurements'...
$ git fetch origin 228718866a53fb19c0b99d2867e50dee96c6d85f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-measurements
 * [new ref]         228718866a53fb19c0b99d2867e50dee96c6d85f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2287188 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild