$ git clone -n https://src.fedoraproject.org/rpms/rust-pango-sys0.20.git /var/lib/mock/f45-build-43716-805/root/chroot_tmpdir/scmroot/rust-pango-sys0.20
Cloning into '/var/lib/mock/f45-build-43716-805/root/chroot_tmpdir/scmroot/rust-pango-sys0.20'...
$ git fetch origin c105ef53b3be6670d7ac21becde2e21a46e2aacb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-pango-sys0.20
 * [new ref]         c105ef53b3be6670d7ac21becde2e21a46e2aacb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c105ef5 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild