$ git clone -n https://src.fedoraproject.org/rpms/gtkd.git /var/lib/mock/f39-build-2499439-61671/root/chroot_tmpdir/scmroot/gtkd
Cloning into '/var/lib/mock/f39-build-2499439-61671/root/chroot_tmpdir/scmroot/gtkd'...
$ git fetch origin a22c2b6c5add0039a7044d8b92dc0dbd9fbc7dae:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gtkd
 * [new ref]         a22c2b6c5add0039a7044d8b92dc0dbd9fbc7dae -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a22c2b6 Require libpeas1 compat package rather than libpeas in F39+