$ git clone -n https://src.fedoraproject.org/rpms/R-magick.git /var/lib/mock/f38-build-side-42-init-devel-1049452-29762/root/chroot_tmpdir/scmroot/R-magick
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1049452-29762/root/chroot_tmpdir/scmroot/R-magick'...
$ git fetch origin 6c3b7d74c0c3a54365d291607d89cef8e2ad717d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-magick
 * [new ref]         6c3b7d74c0c3a54365d291607d89cef8e2ad717d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6c3b7d7 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild