$ git clone -n https://src.fedoraproject.org/rpms/rust-async-openssl.git /var/lib/mock/f45-build-40260-770/root/chroot_tmpdir/scmroot/rust-async-openssl
Cloning into '/var/lib/mock/f45-build-40260-770/root/chroot_tmpdir/scmroot/rust-async-openssl'...
$ git fetch origin 0921faeecc8bdadc588bd6db1b97aa3e0b37526e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-async-openssl
 * [new ref]         0921faeecc8bdadc588bd6db1b97aa3e0b37526e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0921fae Update to version 0.2.10; Fixes RHBZ#2514995