$ git clone -n https://src.fedoraproject.org/rpms/rust-warp.git /var/lib/mock/f40-build-704265-12987/root/chroot_tmpdir/scmroot/rust-warp
Cloning into '/var/lib/mock/f40-build-704265-12987/root/chroot_tmpdir/scmroot/rust-warp'...
$ git fetch origin da96f620997ea0c5898f355945b7d575712e87d5:KOJI_FETCH_HEAD
fatal: unable to access 'https://src.fedoraproject.org/rpms/rust-warp.git/': OpenSSL SSL_connect: SSL_ERROR_SYSCALL in connection to src.fedoraproject.org:443 
$ git reset --hard da96f620997ea0c5898f355945b7d575712e87d5
HEAD is now at da96f62 Update to version 0.3.7; Fixes RHBZ#2273700