$ git clone -n https://github.com/fedora-riscv/perl-DateTime.git /var/lib/mock/f39-build-1526051-36059/root/chroot_tmpdir/scmroot/perl-DateTime
Cloning into '/var/lib/mock/f39-build-1526051-36059/root/chroot_tmpdir/scmroot/perl-DateTime'...
$ git fetch origin f7c87ac5bd82fe8bac8892e65fece8a9f1c29e98:KOJI_FETCH_HEAD
From https://github.com/fedora-riscv/perl-DateTime
 * [new ref]         f7c87ac5bd82fe8bac8892e65fece8a9f1c29e98 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f7c87ac Update perl-DateTime.spec