$ git clone -n https://src.fedoraproject.org/rpms/flatpak.git /var/lib/mock/f40-build-1996495-44024/root/chroot_tmpdir/scmroot/flatpak
Cloning into '/var/lib/mock/f40-build-1996495-44024/root/chroot_tmpdir/scmroot/flatpak'...
$ git fetch origin 7342c77ebd82873c9e12806634aa68b6a069c47d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/flatpak
 * [new ref]         7342c77ebd82873c9e12806634aa68b6a069c47d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7342c77 Update to 1.15.6 (#2249763)