$ git clone -n https://src.fedoraproject.org/rpms/rust-openssl-sys.git /var/lib/mock/f40-build-2073414-49358/root/chroot_tmpdir/scmroot/rust-openssl-sys
Cloning into '/var/lib/mock/f40-build-2073414-49358/root/chroot_tmpdir/scmroot/rust-openssl-sys'...
$ git fetch origin 8a2aeb45b948135475214b2446d0c0a40f83b5e1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-openssl-sys
 * [new ref]         8a2aeb45b948135475214b2446d0c0a40f83b5e1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8a2aeb4 Update to version 0.9.96; Fixes RHBZ#2251133