$ git clone -n https://src.fedoraproject.org/rpms/rust-gix-object.git /var/lib/mock/f40-build-1497115-23862/root/chroot_tmpdir/scmroot/rust-gix-object
Cloning into '/var/lib/mock/f40-build-1497115-23862/root/chroot_tmpdir/scmroot/rust-gix-object'...
$ git fetch origin 08f09e15c0fcdf359c8056dcc932271185304c0f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gix-object
 * [new ref]         08f09e15c0fcdf359c8056dcc932271185304c0f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 08f09e1 Update to version 0.42.2 (rhbz#2282454)