$ git clone -n https://src.fedoraproject.org/rpms/rust-prettyplease.git /var/lib/mock/f40-build-2038768-48210/root/chroot_tmpdir/scmroot/rust-prettyplease
Cloning into '/var/lib/mock/f40-build-2038768-48210/root/chroot_tmpdir/scmroot/rust-prettyplease'...
$ git fetch origin 79b2396ab9fed3c708f6a7a6fa7c672bd8ad1838:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-prettyplease
 * [new ref]         79b2396ab9fed3c708f6a7a6fa7c672bd8ad1838 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 79b2396 Update to version 0.2.15; Fixes RHBZ#2237046