$ git clone -n https://src.fedoraproject.org/rpms/rust-glib-sys0.16.git /var/lib/mock/f38-build-side-43-rust-devel-1416817-31457/root/chroot_tmpdir/scmroot/rust-glib-sys0.16
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1416817-31457/root/chroot_tmpdir/scmroot/rust-glib-sys0.16'...
$ git fetch origin ddec47ea155f4c7f556a2dfdfef38e3912290efc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-glib-sys0.16
 * [new ref]         ddec47ea155f4c7f556a2dfdfef38e3912290efc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ddec47e Initial import (glib-sys 0.16 compat package)