$ git clone -n https://src.fedoraproject.org/rpms/rust-gio-sys0.17.git /var/lib/mock/f38-build-side-43-rust-devel-1409428-31399/root/chroot_tmpdir/scmroot/rust-gio-sys0.17
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1409428-31399/root/chroot_tmpdir/scmroot/rust-gio-sys0.17'...
$ git fetch origin 8f8abcb893405326d4c56b3a01ac2cbbb883fdc5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gio-sys0.17
 * [new ref]         8f8abcb893405326d4c56b3a01ac2cbbb883fdc5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8f8abcb Initial import (gio-sys 0.17 compat package)