$ git clone -n https://src.fedoraproject.org/rpms/rust-glib-macros0.15.git /var/lib/mock/f38-build-side-43-rust-devel-1413468-31444/root/chroot_tmpdir/scmroot/rust-glib-macros0.15
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1413468-31444/root/chroot_tmpdir/scmroot/rust-glib-macros0.15'...
$ git fetch origin 37a7706ae5cd08fc0de6c817680b68135bf278e8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-glib-macros0.15
 * [new ref]         37a7706ae5cd08fc0de6c817680b68135bf278e8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 37a7706 Update to version 0.15.13