$ git clone -n https://src.fedoraproject.org/rpms/mimetreeparser.git /var/lib/mock/f42-flatpak-app-build-58987060-6569865/root/chroot_tmpdir/scmroot/mimetreeparser
Cloning into '/var/lib/mock/f42-flatpak-app-build-58987060-6569865/root/chroot_tmpdir/scmroot/mimetreeparser'...
$ git fetch origin cd1c4f3f5307d3a1482b513047f2a7c98d876fd3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mimetreeparser
 * [new ref]         cd1c4f3f5307d3a1482b513047f2a7c98d876fd3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cd1c4f3 Rebuild (qt6)