$ git clone -n https://src.fedoraproject.org/rpms/perl-CryptX.git /var/lib/mock/f39-build-1434144-31911/root/chroot_tmpdir/scmroot/perl-CryptX
Cloning into '/var/lib/mock/f39-build-1434144-31911/root/chroot_tmpdir/scmroot/perl-CryptX'...
$ git fetch origin ceebbc6b0b9d19c9400ff2c2bdc6a2c568a121fa:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-CryptX
 * [new ref]         ceebbc6b0b9d19c9400ff2c2bdc6a2c568a121fa -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ceebbc6 Update to 0.080 (RHBZ#2242102)