$ git clone -n https://src.fedoraproject.org/rpms/rust-gtk3-macros0.17.git /var/lib/mock/f39-build-1509878-35455/root/chroot_tmpdir/scmroot/rust-gtk3-macros0.17
Cloning into '/var/lib/mock/f39-build-1509878-35455/root/chroot_tmpdir/scmroot/rust-gtk3-macros0.17'...
$ git fetch origin 8cedbe076705206fc54b727c4b97885ab13682aa:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gtk3-macros0.17
 * [new ref]         8cedbe076705206fc54b727c4b97885ab13682aa -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8cedbe0 Initial import (gtk3-macros 0.17 compat package)