$ git clone -n https://src.fedoraproject.org/rpms/espeak.git /var/lib/mock/f39-build-1849553-42213/root/chroot_tmpdir/scmroot/espeak
Cloning into '/var/lib/mock/f39-build-1849553-42213/root/chroot_tmpdir/scmroot/espeak'...
$ git fetch origin e0cbbf74ac32abb1c05b93ca10d7a78d2da2db6b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/espeak
 * [new ref]         e0cbbf74ac32abb1c05b93ca10d7a78d2da2db6b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e0cbbf7 Fully drop f21 upgrade compatibility hack