$ git clone -n https://src.fedoraproject.org/rpms/flatpak-module-tools.git /var/lib/mock/f39-build-1576874-37949/root/chroot_tmpdir/scmroot/flatpak-module-tools
Cloning into '/var/lib/mock/f39-build-1576874-37949/root/chroot_tmpdir/scmroot/flatpak-module-tools'...
$ git fetch origin b69c3b4625a7207fd0a7fd21ec284239e4cb1c09:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/flatpak-module-tools
 * [new ref]         b69c3b4625a7207fd0a7fd21ec284239e4cb1c09 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b69c3b4 Fix %%changelog date