$ git clone -n https://src.fedoraproject.org/rpms/yubikey-manager.git /var/lib/mock/f40-build-1195421-22276/root/chroot_tmpdir/scmroot/yubikey-manager
Cloning into '/var/lib/mock/f40-build-1195421-22276/root/chroot_tmpdir/scmroot/yubikey-manager'...
$ git fetch origin deb3556ea4e1500131f4eadecde835d5929bbb7a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/yubikey-manager
 * [new ref]         deb3556ea4e1500131f4eadecde835d5929bbb7a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at deb3556 rhbz#2294404