$ git clone -n https://src.fedoraproject.org/rpms/rust-gix-negotiate.git /var/lib/mock/f40-build-2701801-70498/root/chroot_tmpdir/scmroot/rust-gix-negotiate
Cloning into '/var/lib/mock/f40-build-2701801-70498/root/chroot_tmpdir/scmroot/rust-gix-negotiate'...
$ git fetch origin 986875f76121c3bc92a19fe15424a0fa8f2936a9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gix-negotiate
 * [new ref]         986875f76121c3bc92a19fe15424a0fa8f2936a9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 986875f Update to version 0.13.0 (rhbz#2253271)