$ git clone -n https://github.com/fedora-riscv/fbthrift.git /var/lib/mock/f39-build-2383563-60474/root/chroot_tmpdir/scmroot/fbthrift
Cloning into '/var/lib/mock/f39-build-2383563-60474/root/chroot_tmpdir/scmroot/fbthrift'...
$ git fetch origin 1a6ce27e2d5c53cce4714126d75ff70df8ba9f00:KOJI_FETCH_HEAD
From https://github.com/fedora-riscv/fbthrift
 * [new ref]         1a6ce27e2d5c53cce4714126d75ff70df8ba9f00 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1a6ce27 Rebuild for f39