$ git clone -n https://src.fedoraproject.org/rpms/libdnf-plugin-txnupd.git /var/lib/mock/f39-build-1551028-36961/root/chroot_tmpdir/scmroot/libdnf-plugin-txnupd
Cloning into '/var/lib/mock/f39-build-1551028-36961/root/chroot_tmpdir/scmroot/libdnf-plugin-txnupd'...
$ git fetch origin e6daaba66d0a9f7bfcc77e5d6c51316d47805fb5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libdnf-plugin-txnupd
 * [new ref]         e6daaba66d0a9f7bfcc77e5d6c51316d47805fb5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e6daaba Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild